@fukou_da_man, Using the bucket tool, (For Paint Tool SAI), does not fill in the required space 100%, the magic wand tool, as tedious as it may seem, does the job of marking as much space as desired of that specific layer. I usually make my outlines on separate layers then merge them into one when I'm all done with the inked outline of the piece. To fill in, I choose the desired tool (Pen Tool or Color Tool I've named for it), then use the command "Ctrl-F" which does the same action as the "bucket tool", maybe even better. One cannot simply do a Perfect solid outline, that is why the magic wand doesn't get that little pixel all the time. I've seen many different coloring techniques on various speed paints, regardless, it will take some time to color in a section of a Canvas 3800 x 6400 pixels (300 Resolution). Thank you for your input though, a drawing as detailed as this would take a while honestly, and Digital is much more efficient than Traditional medium.